/*!	 valuenode_switch.cpp
**	 Implementation of the "Switch" valuenode conversion.
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007, 2008 Chris Moore
**  Copyright (c) 2011 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include "valuenode_switch.h"
#include "valuenode_const.h"
#include <synfig/general.h>
#include <synfig/localization.h>
#include <synfig/valuenode_registry.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;

REGISTER_VALUENODE(ValueNode_Switch, RELEASE_VERSION_0_61_08, "switch", "Switch")

ValueNode_Switch::ValueNode_Switch(Type &x):
    LinkableValueNode(x)
{
}

ValueNode_Switch::ValueNode_Switch(const ValueBase &x):
    LinkableValueNode(x.get_type())
{
    Vocab ret(get_children_vocab());
    set_children_vocab(ret);
    set_link("link_off", ValueNode_Const::create(x));
    set_link("link_on", ValueNode_Const::create(x));
    set_link("switch", ValueNode_Const::create(bool(false)));
}

ValueNode_Switch*
ValueNode_Switch::create(const ValueBase &x)
{
    return new ValueNode_Switch(x);
}

LinkableValueNode*
ValueNode_Switch::create_new()const
{
    return new ValueNode_Switch(get_type());
}

ValueNode_Switch::~ValueNode_Switch()
{
    unlink_all();
}

bool
ValueNode_Switch::set_link_vfunc(int i, ValueNode::Handle value)
{
    assert(i >= 0 && i < link_count());

    switch (i) {
    case 0:
        CHECK_TYPE_AND_SET_VALUE(link_off_, get_type());

    case 1:
        CHECK_TYPE_AND_SET_VALUE(link_on_,  get_type());

    case 2:
        CHECK_TYPE_AND_SET_VALUE(switch_,   type_bool);
    }

    return false;
}

ValueNode::LooseHandle
ValueNode_Switch::get_link_vfunc(int i)const
{
    assert(i >= 0 && i < link_count());

    switch (i) {
    case 0:
        return link_off_;

    case 1:
        return link_on_;

    case 2:
        return switch_;
    }

    return 0;
}

ValueBase
ValueNode_Switch::operator()(Time t)const
{
    if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS")) {
        printf("%s:%d operator()\n", __FILE__, __LINE__);
    }

    return (*switch_)(t).get(bool()) ? (*link_on_)(t) : (*link_off_)(t);
}

bool
ValueNode_Switch::check_type(Type &type)
{
    if (type != type_nil) {
        return true;
    }

    return false;
}

LinkableValueNode::Vocab
ValueNode_Switch::get_children_vocab_vfunc()const
{
    if (children_vocab.size()) {
        return children_vocab;
    }

    LinkableValueNode::Vocab ret;

    ret.push_back(ParamDesc(ValueBase(), "link_off")
                  .set_local_name(_("Link Off"))
                  .set_description(_("The value node returned when the switch is off"))
                 );

    ret.push_back(ParamDesc(ValueBase(), "link_on")
                  .set_local_name(_("Link On"))
                  .set_description(_("The value node returned when the switch is on"))
                 );

    ret.push_back(ParamDesc(ValueBase(), "switch")
                  .set_local_name(_("Switch"))
                  .set_description(_("When checked, returns 'Link On', otherwise returns 'Link Off'"))
                 );

    return ret;
}